Quoin-lock.



UNITED STATES I Patented June 28, 1904.

PATENT OFFICE.

QUOlN- LOCK.

SPECIFICATION forming part of Letters Patent No. 763,709, dated June 28, 1904.

I Application filed November 27, 1903. Serial No. 182,748. (No model.)

To all whom it may concern i Be it known that we, CHARLES G. Emma and HENRY F. KNAPP, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a new and useful Improvement in Quoin-Locks, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

In looking up forms of type-set matter in a chase in printing-offices it is common to use metal quoins between the type-set form and the chase to produce the wedging and locking effects that are required in the locking up of the forms in the chase. These quoins as more recently constructed are metal wedges employed in pairs, the members of the pair or set being used together and complementary to each other.

The objectof our invention is to provide means whereby these quoins forming a set when they have been driven or forced into positionbearing on each other and lockingup the type-forms may be conveniently and readily locked in position so that the members of the set of quoins cannot slip on each other or on the furniture and thereby loosen the lock ing up of the form to permit of the escape disastrously of the form from the chase.

In the drawings, Figure 1 is a plan view of a fragment of a chase, showing therewith and surrounded thereby a fragment of a type-set form with sticks of furniture and quoins and our improved device in connection therewith. Fig. 2 is an end view-ofthe two quoins in position with reference to each other for locking up a form and as seen when the quoins have been driven or forced to a certain extent past each other, respectively. Fig. 3 is a view from the under side of the devices employed by us in connection with the quoins for locking the quoins in place. Fig. 4 is a side view of our locking device, and Fig. 5 illustrates a wrench or tool employed for forcing the quoins up on each other into locking position.

In the drawings, 2 represents the fragment of a chase.

3 represents a fragment of a type-set form locked up in the chase.

.when in locked position. quoin 1s provlded with a recess 9 1n its edge 4 4: are sticks of the furniture employed in locking up the form in the chase.

The quoins with which our improved device is adapted to be employed each consists of a metal wedge 5. Two of these quoins are always used together in a set. Each quoin has a straight flat elongated edge, a thin front end, and a wide rear end, the opposite edge extending from front to rear being inclined toward the straight flat edge from the rear end to the front end, thus forming an elongated wedge of substantially right-angle-triangle form. At the rear end each quoin is solid, forming a base 6 across the end of the quoin of the full thickness of the quoin. Commencing at a point a little distance from the rear end of the quoin the inclined edge of the quoin is cut away at the top and the bottom, leaving a centrally-disposed rib 7 extending from the base to the front end or point of the quoin. The inclined edge of the quoin from the front 'end for some distance toward the rear end has a flat inclined surface 8, forming a way against which the side or edge of the base of the other quoin is adapted to lit and travel when the quoins are being forced past each other and The base of each which teeth on two quoins when placed opposite each other, as shown in Fig. 1, form racks complementary to each other adapted to be engaged by a rotating key'or wrench 11 of the form shown in Fig. 5. Quoins of substantially the form thus described are in use at the present day and are adapted to be employed in connection with sticks of furniture in looking type-set forms in a chase. by the use therewith of a key of the form shown in Fig. 5. For locking quoins of this character together when used in sets for locking up type-set forms in the manner shown in Fig. 1 we provide means as follows: The rib 7 on one or both of the quoins of the set, preferably on both, is serrated or providedwith teeth 12 in and along so much of the rib as extends from the front end toward the rear l gage with the teeth 12 on a rib 7 at one side and at the other side to bear against a stick 4: of the furniture when dropped into place behind a quoin, and the block being of such extent in the direction of the length of the quoin that it cannot swing around on the teeth 12 as on a pivot it looks the quoins of the set in place with reference to each other against escape therefrom. Advisably the sides of the block 13 are left full near the top at 15, forming bearing-faces adapted severally to bear against the stick of furniture at that end of the block distant from and opposite to the rib and the teeth. The sides of the block below the teeth 14 are cut away at 16, the depth of the out being at least as great as the height of the teeth above, so that this block can readily drop into place in engagement with the teeth 12 on the rib 7. I advisable to provide the block 13 with means for locking it releasably to the base of the quoin, and for this purpose atransverse bar 17 is provided,which bar is connected by aneck 18 to the block 13 at its top, the bar and neck being advisably as thick as the bearing-faces 15.

Channels 19 are cut in the top face of each base6 of each quoin to receive. therein the transverse locking-bar 17 and the neck 18.

The construction is such that when the quoins have been placed between sticks of the furniture and have been forced past each other in the manner shown in Fig. 1 by the use of the key 11 then a locking-block 13 may be dropped into place behind one or the other of the quoins, and in such manner that the teeth 14 engage the teeth 12 and the transverse bar 17, with its neck 18, drops into the channels 19, whereby the block is held to place with reference to that quoin and in position at the rear of the quoin to lock it in position with rela- VVe also deem it tion to the other quoin of the set. In use the locking-block 13 may be dropped into place from the top where the form is to be used on a cylinder-press or on any press where the bed is in horizontal position; but when the form is to be used on a platen-press it is better to insert the locking-block into place from the under side of the locked-up form.

What we claim as our invention is 1. In combination with a pair of quoins one of whichhas teeth on its inclined edge, a quoinlocking device, consisting of a block as wide as the base of one quoin and having teeth on one side edge adapted to engage the teeth on the'side of the other quoin, the opposite side of the block being adapted to bear against the furniture with which the quoins are employed.

2. In combination with wedge-shaped typelocking quoins one of which has a longitudinal rib on its inclined edge. and teeth. formed in the rib of that portion thereof at its inner end and the, other of which has channels to receive the bar and neck of a locking-block, a detachable locking-block having teeth adapted to engage the teeth on said rib and a locking-bar connected to said block by a neck adapted to secure the locking-block releasably to and in position against the rear end of a quoin.

3. In combination, a set of wedge-shaped quoins one quoin having teeth on its inclined 1 edge near its thinner end, and a locking-block substantially as wide as the base of one quoin of the set and having a tooth or teeth on its sideadapted to engage a tooth or teeth on the inclined edge of the quoin, and a locking-bar" connected to said block by a neck adapted to enter channels therefor in the base of a quoin and to hold the block releasably in place at the end of the quoin and in engagement with said tooth or teeth on the thinner end of the other quoin.

In testimony whereof we afiix our signatures in presence of two Witnesses.

CHARLES Gr. BANSE. HENRY F. KNAPP.

Witnesses:

(J T. BENEDICT, ANNA F. SCHMIDTBAUER. 

